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INCOME TAXES - UNRECOGNIZED TAX BENEFITS (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]    
Unrecognized tax benefits $ 0.0 $ 0.0
Accrued interest related to unrecognized tax benefits 0.0 0.0
Accrued penalties related to unrecognized tax benefits $ 0.0 $ 0.0